Used with the IG_ISIS_install_driver_get_ascii, IG_ISIS_install_driver_get_long, IG_ISIS_install_driver_set_ascii, and IG_ISIS_install_driver_set_long functions.

Values:

IG_ISIS_INSTDRIV_SCANNER	Get or set the name of the scanner being installed.
IG_ISIS_INSTDRIV_REQUEST	Get this value when IG_ISIS_install_driver_step returned IG_ISIS_INSTDRIV_NEEDINFO to find out what type of user interaction is needed.
IG_ISIS_INSTDRIV_TITLE	Get the title to use on dialogs during user interaction.
IG_ISIS_INSTDRIV_PARENTWINDOW	Get or set the parent window for dialogs.
IG_ISIS_INSTDRIV_SILENT	Get or set whether to install the driver silently.
IG_ISIS_INSTDRIV_DEFAULTSCANNER	Get or set whether this scanner is going to be set up as the default scanner.
IG_ISIS_INSTDRIV_ANSWERED	Get or set whether this NEEDINFO has been answered.
IG_ISIS_INSTDRIV_YESNO_MSG	Get the question to ask for the current YESNO request.
IG_ISIS_INSTDRIV_YESNO_DEFAULT	Return the default answer for the current YESNO request.
IG_ISIS_INSTDRIV_YESNO_ANSWER	Get or set the answer for the current YESNO request.
IG_ISIS_INSTDRIV_SHOWMSG_MSG	Get the message to display for the current SHOWMSG request.
IG_ISIS_INSTDRIV_ASKSTRING_MSG	Get the question to ask for the current ASKSTRING request.
IG_ISIS_INSTDRIV_ASKSTRING_DEFAULT	Get the default answer for the current ASKSTRING request.
IG_ISIS_INSTDRIV_ASKSTRING_NEEDDIR	Returns a value that specifies if the current ASKSTRING request needs a directory name as the answer.
IG_ISIS_INSTDRIV_ASKSTRING_ANSWER	Get or set the answer to the current ASKSTRING request.